Method of making envelops and the like.



W. H. JACOBS. METHOD 0F MAKING ENvELoPs AND THE LIKE.

APPLICATION FILED MAR. 30. 1915- Patented. Jan. 23, 1917.

2 SHEETS-SHEET l.

| a i l i l l I f l W. H. JACOBS. METHOD 0F MAKING ENVELOPS AND THELIKE.

APPLICATION FILED MAR. 30. |915- LIWQ., Patented Jan. 23, 1917 2SHEETS-SHEET 2- nn are .an n.

WILLIAM JACOBS, OF WASHINGTON, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO THE LOCK-TIT-E ENVELOPE CORPORATION, OF NEW YORK, N. Y., ACOR- IPORATION OF YORK.

METHOD OF MAKING: ENVELOPS AND THE LIKE.

Specification of Letters Patent.

iratenteo.ran.aa,iait.

@riginal application led .Tune 12, 1914, Serial No. 844.619. Divided andthis application filed March 30, 1915. Serial 110.118,192.

To all whom it may concern:

lBe it known that I, WILLIAM 1-1. JACOBS,

' citizen of the United States, and resident of Washington, in thecounty of Litchfield and State of Connecticut, have invented certain newand useful Improved Methods of Mak ing-Fnvelops and the like, of whichthe following is a specification.

This invention relates to an improved method of making articles such asenvelops or mailing wrappers, and more particularly to methods of makingwhat are known as pocket envelops, that is, envelops in which the.closure is edected by the insertion of a tongue or, the like on one sideof the envelop into a pocket formed on the other side of the envelop,such envelops being described for example in the specification of myco-pending application for patent Ser. No. 844,619 filed June 12th,1914, and being particularly useful for the despatch of second classmatter through the mails.

The present invention is a divisional application upon theaforementioned co-pending application Serial No. 844,619 led June K Myinvention has for its object a cheap and eicacious method ofmanufacturing`en velops and other articles of the same-generalcharacter.

The invention consists in the improved methods of manufacturing articlesof this kind as hereinafter described and claimed with reference to theaccompanying drawings which illustrate the various steps in themanufacture of a preferred form of'envelop.

lln the drawings: Figure 1 is a plan view of a bag on which is indicatedcertain incisions to'be made under the present invention. Fig. 2 is aperspective view of a bag incised in accordance with the present,invention. Fig. 3 is a plan View of the bag shown in Fig. 2 on which isindicated an applied piece of reinforcing material and paste for thebag. Fig. 4 is a fragmentary' view of the parts shown in Fig. 3, inwhich the turned under part for the pocket is shown as pasted down. Fig.5 is a view similar to Fig. 4 in whichl the transverse portion of thepocket is shown as pasted down together with its lateral wingsor ears,to form a contpletev article. Fig. 6 is an enlarged transverse sectionon the line 66 Fig. 5. Fig. 7 1s a section on the line 7 7 Fig. 6.

Referring to Fig. 1, a tube 10 is shown which may be made in an ordinarybag ma chine and is composed of paper or other suitable material. Thebottom 10a of the bag may be closed beforethe other end of the bag isformed, in accordance with the present invention. Preferably while thetube 10 is onl a former of the machine, the side edges of the same areslitt'ed longitudinally as indicated at 11, 12, so as to provide aportion 14 extending from the body of the tube or bag and a flap 13', asshown in Fig. 2.` Either simultaneously with or after the slitting ofthe bag or tube at 11, 12, slits 15, 16, are produced in the extendedbody portion 14, which slits are parallel -with each other and with theslits formed at 11, 12, said slits 15, 16, being located nearer to theedges of the bodv portion 14 than they are to each other. ltnasmuch asthe described slits extend longitudinally of the body of the bag ortube, the same may be conveniently v formed in most any bag machine,although scribed incisions, a transverse portion 17 at l the ends ofwhich are lateral wingsfor ears 18, 19, between which is located aportion 2O which is joined tothe portion 17 along the dotted lineindicated. The so slitted bag or tube will be seen to constitute a blankas it were, for the complete bag or envelop. Preferably while the saidslits are being formed, the slitting knives are 'prevented from injuringor cutting the flap 13. The latter may, however, beafterward formed intoany desired shape, as for instance, the corners thereof may becut oif.The described blank is' now readv to be formed up so as to produce anarticle with a pocket 1nto which the fold-over flap 13 may be inserted.Referring to Fig. 3, it will be seen that. a strip 21 of tape, cordorvstring, or other suitable HeXible material is stretched trans- 20 isattached, and the same is introduced for providing a reinforce in thecomplete article. Preferably the ends of the said reinforce are extendedbeyond the slits 15 and 16 and toward the outer ends of the lateralwings or ears 18, 19. Paste is now applied as at 24, or the paste mayfirst be applied and the reinforce 21 applied afterward. It isdesirable, although not absolutely necessary, that a reinforce beapplied. Next the part 20 is folded down against the transverse portion17 as indicated in Fig. 4, thereby forming a fold 25 which incloses thereinforce 21 if there be one. The complete article is next produced asshown in Fig. 5. To finish the article, the transverse portion togetherlwith its attached parts are folded down against the body ofthe article,.the ends of said transverse portion being pasted to the opposing edgeportions of the body and the lateral wings or ears 18, 19, are pasteddown upon the same surface of the body along the edge portions at 26,27. Obviously the corners of the flap 13 may be turned over as indicatedin dotted lines.

4The article being now complete, it will be seen to have a pocket at 28,as more clearly shown in Figs. 6 and 7. This pocket extends transverselyof the body and is adapted to be engaged by the fold-over flap 13. Itwill be seen that the material which has been cut out from between thewings or ears 18, 19, ismade use of in the pocket, as it constitutes aturned-under part which provides a folded edge for the pocket opening,and at the same time incloses the reinforce 21. The lateral wings orextensions`18, 19 from the transverse portion 17 and hence from thepocket 28, are made use of to stifen and strengthen the pocket end ofthe article. If a reinforce is used such as def scribed, the wings aremade use of to anchor the ends 22, 23 of the reinforce, which ends inthe complete article extend to one side of the edge of the pocketopening and laterally away from the pocket. that by extending the ends22, 23 of the reinforce in the direction shown, the edge of the pocketopening is better able vto withstand any strain which is imposed in thedirection of the closing flap when it is'engaged with the pocket.

It will be seen that under the present invention a tube may be used, tobe cut, folded and pasted so as to produce an article with a pocket tobe engaged with a closing fiap, and that unless desired, the body of thearticle, if it be a bag or envelop, need not be cut or slit. It will befurthermore seen that in the preferred form -of the invention there areno lateral extensions necessarily from the tubular body,either in theprocess of manufacturing the article or when the article is complete.

Obviously the invention is susceptible of further modication, as partsmay be It will be noticed omitted, parts added, and parts substitutedwithout departing from the scope of the invention as expressed in theclaims.

It will be understood that by the term bag machine herein employed Imean any machine of well-known character such as is in general use formaking tubular bodles for bags or the like from a continuousqweb or rollof paper, as distinguished from envelop machines in which sheets ofpaper are cut to shape by means of dies.` the shape to which the blankis cut in this manner being such that when folded subsequently thepocket will be formed.

What I claim is 1. The method of making envelops or the like of the kinddescribed which consists in forming a tubular body said body being ofgreater length than the envelop to be formed, and cutting and foldingpor- 85 tions of said tubular body to form a pocket and co-actingtongue.

2. The method of making envelops or the like of the kind described whichconsists in first forming a tubulai` body of greater length than theenvelop, then cutting sald body at one end to provide a foldable portionand folding said foldable portion and securing it to'said body.

3. The method of making envelops or the like of the kind described whichconsists in first forming a tubular body, cutting said body to provide afoldable portion, and folding said foldable portion and securing it atits ends to said body to form a pocket. 10(

4. The method of making envelops or the like of the kind described whichconsistsin first forming a tubular body of greater' length than theenvelop, then cutting said body at one end to provide a foldable por- 1mtion, then folding said portion to form two folds, and securing saidfolded portion to said body to provide a pocket.

5. The method of making envelops or the like of the kind describedconsisting in cut- 11( ting a tubular bag body to provide a foldableportion, folding said portion and securing it to provide a pocket, andforming a tongue adapted to fit into said pocket.

6. The method of making envelops or the 111 like of the kind describedconsisting in cutting one end of a tubular bag body to form a foldableportion, folding-said portion to form a. double fold, and securing saidportion when folded.

7. The method of making envelops or the like of the kind describedconsisting in forming incisions in a tubular bag body to provide afoldable portion, associating a reinforcing member with said foldablepor- 12.l tion, folding said foldable portion over said reinforcemember, and securing said foldable portion when folded so as to providea pocket. i

8. The method of making envelops or the 13| Leimen like of the kinddescribed consisting in cutting a tubular bag body to form a foldableportion and cutting the front edge of said foldable portion to form sidewing portions,-

folding said foldable portion, and securing said side wings to thetubular body.

9. The method of making envelops or the like of the kind describedconsisting in cuttinga tubular bag body to form a foldable portion atits open end, cutting the frontedge of said foldable portion to formsidewing portions and an intermediate portion, folding said intermediateportion, and folding said foldable portion and securing said side wingsto the tubular body to form a pocket.

10. rlhe method of making envelops or the like of the kind describedconsisting in cutting a tubular bag body to form a foldable portion andcutting the front edge of said foldable portion to form side wingportions and an intermediate portion, associating a flexible reinforcewith said foldable portion, folding said intermediate portion over thereinforce so that it incloses the reinforce, and folding the foldableportion as a whole and securing it to the tubular body by applying pasteto said side wings.

11. The method of making articles of paper or the like, ,which consistsin forming a flat tubular body, slitting opposite side edges of saidbody and a portion of said body between said side slits, and folding andpasting said slitted portion to form a pocket.

12. The method of making articles of paper or the like, which consistsin forming the body, slitting opposite side edges of said body and aportion of said bodypbetween said side slits, applying paste to theouter surface of said slitted portion, and folding the same to form apocket.

13. The method of making `a pocket envelop or the like consisting infirst forming a tubular rectangular body, closing the bottom edge ofsaid body, then slitting the top edge of said body to provide a foldableportion on one face thereof, folding said portion in a direction towardthe bottom edge, and securing said folded portion to said face.

14. The method of making la pocket envelop or the like consisting intaking a continuous web or roll of paper, forming a tubular body fromsaid paper, one end of said body being closed, slitting the other end ofsaid body to provide a foldable portion, folding said portion towardsaid closed end of the body and securing said portiorfl 60,.

to the body to forma pocket.

Signed at New York in the county of New York and State of New York this18th day of March A. D. 1915.

WllLlLllAM H. JACOBS.

